7.溝渠施工時,可用下列何種樁來控制溝底深度?
(A)保護樁
(B)支距樁
(C)中心樁
(D)角位樁
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統計: A(16), B(349), C(36), D(22), E(0) #1882182
統計: A(16), B(349), C(36), D(22), E(0) #1882182